Question
Write the coefficient of $x^2$ in the following:
$(x-1)(3 x-4)$
$(x-1)(3 x-4)$
✓
Answer
$\text { Let } p(x)=(x-1)(3 x-4)$
$=3 x^2-7 x+4$
$=3 x^2-4 x-3 x+4$
Hence, the cofficient of $x^2$ in $p(x)$ is $3 .$
$=3 x^2-7 x+4$
$=3 x^2-4 x-3 x+4$
Hence, the cofficient of $x^2$ in $p(x)$ is $3 .$
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